Stringer



u n M4 A. JORDAHIL STRINGER Um. M :A

Filed Nov. 11,

Syvum/1101;

A. JORDAHL STRINGER Filed Nov. 11 1922 2 Shawna-Smm. 2

AND JURADA, 01E' NEW WOR, ltl'. Y.

STRINGER.

Application tiled November 11, 1932.' aerial No. 600,270. v

To all whom it may concern:

Be it known that Tf ANDERS JORDAHL, subject of the King of.v` Norway, 'residing at New York, in the county and State of New York, have invented certain new. and useful Improvements in Stringers, of which the following is a specification.

The present invention relates to steel stringers for rigidly and securely fastening overhead shafting or the like. Accordin to `the present invention the beams are ro led or otherwise manufactured and are braced by cross braces at predetermined intervals. 1t has been found that shafting which o erates a plurality of machinery is expose to a great deal of vibration which causes constant care and repair. This hasbeen obvi ated by means of cross braces placed at suitable intervals to the beams which do not interfere in any way with the shaft bearings or to' the means for securing the Stringer. The stringers may be secured anywhere to the ceiling girders without weakening them and can be removed without the slightest difficulty. The shaft bearing can be secured to the stringers at -any desired point and can be removed, placed in 'a dierent location or shifted, without interfering with the remainder of the installation.I

The invention will be more readily understood from the following description in connection with the drawings in which like numerals indicate corresponding parts throughout, and in which:

Figure 1 is a view partly in section of the Stringer installation,

Fig. 2 is a view similar to Fg. 1 showing the Stringer secured toa concrete beam,

Fig. 3 is an edge view of the cross brace,

Fig. t is an elevation of a tie clip,

Fig. 5 is a view similar to Fig. 1 showing a slightly diderent Stringer beam,

Fig. 6 is an edge View of a fastening clip shown in Fig. 5,

Fig. 7 is a front view thereof,

Fig. 8 is a perspective view showing means for securing a Stringer beam,

Fig. 9 is an elevation of the tie plate shown A in Fig. 8, v

Fig. 10 is a view partly in section of an adjustable Stringer,

Fig. 11 is a top view thereof,

Fig. 12 is a view similar to Fig. 1,

Fig. 13 is a view partly in section showing a modication,

Fig. 1t is a similar view of'another modification, and

Fig. 15' is a similar view of still another modification.

The steel Stringer beams 1 and 2 may be constructed of any suitable cross section; .but preferably comprise perpendicular sections 5 having integral arms 6 'and 7 extending at right angles thereto and in opposite directions. At the ends of these arms, small portions 8 and 9 are'bent or rolled at right angles to their respective arms toward thel center of the Stringer beam in order to form more perfect securing means. The Stringer beams l and 2 are rigidly connected together by cross-brace 3 placed at suitable intervals. Two of these braces-of somewhat di'erent shape, however-are shown by way of example in Fig. 11, and it is to be understood that as a matter of course, a plurality of braces will utilized in each of the several forms of the invention; it being considered suicient for all practical purposes to limit such disclosure to a single figure. These braces comprise steel angle sections as shown in Fig. 3 and are secured between the Stringer beams in such away 'that the braces will not interfere with any securing means for the stringers to the super-structure, or for the shaft hangers to the stringers. As shown in Fig. 1 the special. bolt 11 secures the shafting to .fthe re ective arms of the stringer. its.

shown in ig. 12, the bolts 30 are for the purpose of securing shafting which run parallel to the stringere.

Fig. 2 shows a method of securing the Stringer to the concrete beam 12. This is accomplished by means of tie clips 13 which are Secured to the beam 12 by means of expansion bolts 14. This clip comprises a section 15 bent at right angles which presses against the concrete beam and a crooked portion 16 which is adapted to secure the arm of a Stringer to the beam 12. Tf it is required to secure the Stringer to steel beams such as ll-beam 23, fastening clip 21 can be used to secure a tie plate 2t, the Stringer beam being supported from this plate. The portion 22 of these clips 21 fits into the recess 25 to prevent any side slip.

The Stringer beam 17 is similar to the beams 1 or 2 but the portions 8 and 9 have been omitted from the arms 18 and 19 in` order to adapt it to special circumstances such as a shaft support 20 secured thereto lll@ by means of fastening clips 21. These clips 21 have a portion 22 which fits into a recess v in the support 20 thus forming a very efiicient and sim le means of support.

An adjusta le strin er is shown 1n Figs. 10 and 11, the adjusta le features comprlsing the cross brace 26 constructed in two parts 27 and 28 of steel angle plates. These plates have a plurality of holes 29 there1n and as here shown comprise three rows whereby the strin er beams can be adjusted to any desired Width by means of bolts, not

own.

It is of course understood that various modifications of Stringer beams can be utilized, the most suitable being shown in Figs. 13 and 15 which constitute plainchannel members 31 and 32 having inward flanges 33 or outward flanges 34. Fig. 14 shows a Stringer beam made vin twopieces 35 and 36. This construction is utilized where greater -strength is required as the portions 37 and 38 extending on both sides of the upright member.

I claim as my invention v 1 1. A structural steel building unit, comprising a pair of Stringer beams in spaced relation having a vertical web and securing means'at each vertical end of said web; an' a plurality of U-shaped cross braces secured vertically to the vertlcal webs.

2. A structural steel building unit, coinprising a pair of Stringer beams of substantial S-shape, each end of said S being adapted to receive securing means; and a plurality of cross braces secured to the beams, said cross braces being of substantial channel cross section.

3. A structural'building unit, comprisin a pair of Stringer beams having a centra vertical web and top and bottom flanges extending in opposite directions at the longitudinal ends of said webs; and a lurality of adjustable cross braces secured) to the webs of said beams.

4.,A structural building unit, comprising a pair of stringer beams having a central vertical web and top and bottom flanges extending in opposite directions at the longitudinal ends of said webs; and a plurality of cross braces secured to the webs of said beams, said cross braces comprising two sections having means for securing them together.

5. A structural steel building unit, comprising a pair of Stringer beams having a central vertical web and top and bottom flanges extending in opposite directions at the longitudinal ends of said webs, each of said flanges having' means adapted to receive securing means; and a plurality of cross braces secured to the webs of said beams, said braces being horizontally adjustable.

'6. A structural building unit, comprising a pair of Stringer beams of substantial S-shape, each having a central web portion,

and top and bottom flanges at the longitudinal ends of said web portion; and a plurality of channel-shapedcross braces rigidly and longitudinally secured to the webportions of said beams b means of the bent end portions of said races.

In testimony whereof I affix my signature.

ANDERS JORDAHL. 

